package com.sky.controller.user;

import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@Slf4j
@RestController("userDishController")
@RequestMapping("/user/dish")
@Api(tags = "c端用户根据分类id查询菜品")
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private RedisTemplate redisTemplate;
    /**c端用户根据分类id查询菜品
     *
     */

    @GetMapping("/list")
    @ApiOperation("c端根据分类id查询菜品和口味")
    public Result<List<DishVO>> getDishByCategoryId(Long categoryId){
        //构造redis中的key  dish_分类id
        String key = "dish_" + categoryId;
        //查询redis中是否存在菜品数据
        ValueOperations valueOperations = redisTemplate.opsForValue();
        //获取 key
        List<DishVO> list = (List<DishVO>) valueOperations.get(key);
        if (list != null && list.size()>0){
            //存在，直接返回,无需查询数据库
            return Result.success(list);
        }

        //不存在，查询数据库，将数据放入redis中
        log.info("c端根据分类id查询菜品，categoryid：{}",categoryId);
        list = dishService.listFlavos(categoryId);
        valueOperations.set(key,list);
        return Result.success(list);
    }
}
